Question

我试图让用户输入两个数字，然后重复他们的总和。现在，当我尝试在main（）

中调用函数时，VS 2015无法识别参数

我试图了解基本功能和参数概念化的细分。我到了那里，但我需要看看我的思维过程在哪里崩溃。

#include <iostream>

using namespace std;


int addNumbers(int FirstNumber, int SecondNumber) {
    cout << "enter first number: " << endl;
    cin >> FirstNumber;
    cout << "enter second number: " << endl;
    cin >> SecondNumber;
    int answer = FirstNumber + SecondNumber; 
    cout << answer;
    return answer; 

}

int main() {

    cout << "Test\n";
    cout << addNumbers(FirstNumber, SecondNumber);
    return 0;
}

Answer 1

您需要定义您正在使用的变量。而且，您只需要在需要的地方定义它们。例如

#include <iostream>
using namespace std;                      // this is not recommended but I won't 
                                          // change your code completely
int addNumbers()
{
    int FirstNumber, SecondNumber;        // local variables
    cout << "enter first number: " << endl;
    cin >> FirstNumber;
    cout << "enter second number: " << endl;
    cin >> SecondNumber;
    return FirstNumber + SecondNumber;    // compute and return result
}

int main() {    
    cout << "Test\n";
    cout << addNumbers();
    // note: return 0; is not needed.
}

C ++函数问题=帮助我理解基本概念

1 个答案: